Portable test instrument



FIG. 1 is an oblique frontal view of a portable test instrument showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a rear elevation view thereof;

FIG. 6 is a left side elevation view thereof;

FIG. 7 right side elevation view thereof;

FIG. 8 is an oblique rear view thereof; and,

FIG. 9 is another oblique frontal view thereof, taken from below.

The dashed line showing of structural lines is included for the purpose of illustrating non-claimed subject matter and forms no part of the claimed design. 

CLAIM The ornamental design for a portable test instrument, as shown and described. 